Protecting wall device for site with hole easy to collapse

• Main Authors: LIU ZHAOWEI, YU ZHAOYIN, YANG HAIYANG, WANG LIANG, HE XIN, WANG HAO, WANG QUN, JIN FUYIN, WEN HUAXING, WANG YIREN, ZHAO WEICHEN, JIAO TICHAO, WANG ZHENYANG, WU YANFENG, ZHENG FANGLEI, ZHAO HAIZHI, SUN LIANJIANG, MA JIANCHAO
• Format: Patent
• Language: Chinese; English
• Published: 07.06.2022
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention relates to a wall protection device used for a hole collapse site, which comprises an air bag, inner support sheets and outer support sheets, the air bag is an unclosed annular air bag with a notch, the inner support sheets and the outer support sheets are respectively adhered to the inner side and the outer side of the air bag, the inner support sheets are uniformly distributed at intervals along the circumferential direction of the air bag, and the outer support sheets are arranged at intervals along the circumferential direction of the air bag. The multiple outer supporting pieces are correspondingly and evenly distributed in the circumferential direction of the air bag at intervals. The gaps of the air bags correspond to the interval positions between the inner supporting pieces and the interval positions between the outer supporting pieces. Elastic thin steel sheets I are arranged on the inner side and the outer side of the air bag corresponding to the interval positions between the inner s